Infiniti F50. Manual — part 558

DUAL MODE MUFFLER

EX-9

INSPECTION OF DUAL MODE MUFFLER CONTROL UNIT OUTPUT SIGNAL

Check voltage between terminals 4 and 5 of dual mode muffler con-
trol unit harness connector and ground.

INSPECTION OF DUAL MODE MUFFLER CONTROL UNIT INPUT SIGNAL

Check voltage between terminals 1, 2, 3 and 6 of dual mode muffler
control unit harness connector and ground.

INSPECTION OF ECM OUTPUT SIGNAL

●

Check that tachometer operates normally.

●

Check voltage between ECM terminals 38, 113 and ground at
idling engine.

INSPECTION OF HARNESS CONTINUITY

Disconnect connectors of ECM, dual mode muffler control unit and
actuator. Check resistance between terminals.

Terminals

Input

signal

(Exhaust

control valve)

Condition

Voltage V

(+)

(-)

Terminal

(Wire color)

4 (G/Y)

GND

Open

ING ON

Battery voltage

(11 - 14)

0 - 1

5 (G/R)

0 - 1

Battery voltage

(11 - 14)

PBIC0179E

Terminals

Input signal

Condition

Voltage V

(+)

(-)

Terminal (Wire color)

1 (W/G)

GND

Battery

ING ON

Battery voltage

(11 - 14)

3 (L)

Revolution

Idling

Approx. 4 - 6

2 (B)

Earth

IGN OFF

6 (R/Y)

Accelerator

pedal position

sensor opening

Over half

ING ON

More than

approx. 2.4

Below half

Approx. 0 - 2.4

PBIC0180E

Terminals

Output signal

Condition

Voltage V

(+)

(-)

Terminal (Wire color)

38 (W/G)

GND

Revolution

Idling

Approx. 4 - 6

113 (R/Y)

Accelerator

pedal position

sensor opening

Over half

IGN ON

More than

approx. 2.4

Below half

Approx. 0 - 2.4

PBIC0181E

Terminals (Wire color)

Resistance

Ω

Actuator terminal 1 (G/Y) and muffler control unit terminal 4 (G/Y)

Actuator terminal 2 (G/R) and muffler control unit terminal 5 (G/R)

ECM terminal 38 (W/G) and muffler control unit terminal 3 (L)

ECM terminal 113 (R/Y) and muffler control unit terminal 6 (R/Y)

PBIC0182E

EX-10

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Tightening torque

EBS001Z8

Unit: N·m (kg-m, ft-lb)

Unit: N·m (kg-m, in-lb)*

Exhaust system connections
Between exhaust manifold and exhaust front tube
Between exhaust front tube and center muffler
Between center muffler and main muffler
Exhaust mounting fixing bolts
For exhaust front tube
For center muffler
Heated oxygen sensor 2 (bank 1) (bank 2)

45.1 - 59.8 (4.6 - 6.1, 34 - 44)
51.0 - 64.7 (5.2 - 6.5, 38 - 47)
30.4 - 39.2 (3.1 - 4.0, 23 - 28)

25.5 - 31.4 (2.6 - 3.2, 19 - 23)

12.7 - 15.7 (1.3 - 1.6, 10 - 11)

40 - 50 (4.1 - 5.1, 30 - 36)

Dual mode muffler
Muffler control unit
Actuator
Actuator mounting bracket
Actuator cover
Cable lock nut (Both actuator and valve side)
Cable middle clamp tightening bolt

5.0 - 6.47 (0.51 - 0.65, 45 - 57)*
5.0 - 6.47 (0.51 - 0.65, 45 - 57)*

14.7 - 18.6 (1.5 - 1.8, 11 - 13)

5.0 - 6.47 (0.51 - 0.65, 45 - 57)*

25.5 - 33.3 (2.6 - 3.3, 19 - 24)

5.0 - 6.47 (0.51 - 0.65, 45 - 57)*